linux-kernel - Re: [PATCH 3/3] PCI: dwc: Create debugfs files in DWC driver

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Date:   Fri, 21 May 2021 15:04:37 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Shradha Todi <shradha.t@...sung.com>
Cc:     linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        jingoohan1@...il.com, gustavo.pimentel@...opsys.com,
        lorenzo.pieralisi@....com, robh@...nel.org, bhelgaas@...gle.com,
        pankaj.dubey@...sung.com, p.rajanbabu@...sung.com,
        hari.tv@...sung.com, niyas.ahmed@...sung.com, l.mehra@...sung.com
Subject: Re: [PATCH 3/3] PCI: dwc: Create debugfs files in DWC driver

On Tue, May 18, 2021 at 11:16:18PM +0530, Shradha Todi wrote:
> Add call to create_debugfs_files() from DWC driver to create the RASDES
> debugfs structure for each platform driver. Since it can be used for both
> DW HOST controller as well as DW EP controller, let's add it in the common
> setup function.
> 
> Signed-off-by: Shradha Todi <shradha.t@...sung.com>
> ---
>  drivers/pci/controller/dwc/pcie-designware.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
> index 348f6f696976..c054f8ba1cf4 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.c
> +++ b/drivers/pci/controller/dwc/pcie-designware.c
> @@ -15,6 +15,7 @@
>  
>  #include "../../pci.h"
>  #include "pcie-designware.h"
> +#include "pcie-designware-debugfs.h"
>  
>  /*
>   * These interfaces resemble the pci_find_*capability() interfaces, but these
> @@ -793,4 +794,8 @@ void dw_pcie_setup(struct dw_pcie *pci)
>  		       PCIE_PL_CHK_REG_CHK_REG_START;
>  		dw_pcie_writel_dbi(pci, PCIE_PL_CHK_REG_CONTROL_STATUS, val);
>  	}
> +
> +	ret = create_debugfs_files(pci);
> +	if (ret)
> +		dev_err(pci->dev, "Couldn't create debugfs files\n");

Was there supposed to be a corresponding remove_debugfs_files() call?
On module unload?

>  }
> -- 
> 2.17.1
>